Voltage-controlled governor for internal-combustion engines



I. T. SWARTZ. v

VOLTAGE CONTROLLED GOVERNOR ron INTERNAL COMBUSTION ENGINES.

APPLICATION HLED NOV. 15, I918.

Patented Dec. 7, 1920.

2 SHEETS-SHEET 1.

WITNESS: WW 7 17M T. SWARTZ. VOLTAGE CONTROLLED GOVERNOR FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED NOV. I5, I918.

. 1 ,361 111 Patented Dec. 7, 1920.

2 SHEETS- -SHEET 2.

WITNESS: 2 7INVENTOR. 7 BY a a ATTORNEY6 UNITED STATES PATENT OFFICE.

IRA. '1. SWARTZ, OF INDIANAPOLIS, INDIANA, ASS'IGNOR T0 SWARTZ ELECTRIC COMPANY, OF INDIANAPOLIS, INDIANA, A CORPORATION OF INDIANA,

VOLTAGE-CONTROLLED GOVERNOR FOR INTERNALCDIVIBUSTION ENGINES.

Specification of Letters Patent.

Patented Dec. 7, 1920.

Application filed November 15, 1918. Serial No. 262,787.

To all whom it may concern:

Be it known that I, IRA T. SwARrz, a citi- Zen of the United States, residing at Indianapolis, Marion county, and State of Indiana,

have invented and discovered certain new governor and whereby the throttle valve must be opened byhand to enable the engine to be started to thereby effect the operation of the generator and produce a current through the governor; to provide means whereby the throttle valve may be supported temporarily in open position upon starting after it has been moved to such position manually thus leaving the hands of the operator free to manipulate the switches or other parts of the controlling mechanism of the system and to generally improve the construction of a device of this kind.

\Vith these objects in View my inventioniis embodied in preferable form in the construction and arrangement hereinafter described and illustrated in the accompanying drawings.

In these drawings, Figure 1 is an end view in elevation; Fig. 2, a horizontal section; Fig. 3, a vertical section and a diagrammatic view showing the engine and line connections and battery. 7

Referring to the drawings, 1 indicates dia rammatically' an internal combustion engine constituting the prime mover, 2 a dynamo electric machine adapted to operate as motor or a generator, 3 the load lines and 4 a battery adapted to supply ignition current on starting and to be charged by' the generator. Leading from a carbureter 5,1s an explosive mixture conducting pipe 6 adapted to lead to the cylinder of the engine. On this pipe is mounted a throttle valve 7 of the butterfly type which is adapted to control the flow of explosive mixture to the en ine. This valve is fixed upon a rotatable s aft extension 8 forming part of or fixed to an armature shaft 9 on which is carried the oscillating armature 10 of a voltage controlled governor which has fields l1 and a casing 12. This governor is connected by leads 13 with the load lines 3 and the armature is series wound and responsive in magnetic electric force, inducing a rotation of themmature, to changes in voltage in the generator.

It will be seen that the line through the opposing poles of the fields is at an angle to the vertical, and the field of attraction through which the armature moves coincides with and is confined to the arc of 90 through which the throttle moves as the same iscarried from throttle closing position due to the cutting out of the generator set and the closing position of the other end of the movement due to undue increase in voltage.

At the opposite end of the shaft 9 is fixed a weight 1 1 which is adjustably threaded upon a lever arm 15 and which weight is the weight tends to turn the valve toward closing position in the other direction.

Pivotally hung upon the exterior of the pipe 6 is a latch '16 having a tongue 17 adapted to engage a shoulder 18 formed in the hub of the lever 15 and operable when the weight is lifted to an angular position'to maintain the weight in such position and the throttle valve open, the weight of the block 14. serving to bear against the hook of the latch with suflicient pressure to hold the arm up in this position. i

The operation is as follows:

When the system is not in use the weight block hangs downwardly in vertical posltion as indicated in dotted lines in Fig 1. In this position the throttle valve is closed. Current forr ignition may therefore be supplied fromthe battery, but such current is insufficient to lift the weight 14. In order to start the prime mover it is necessary tov open the throttle valve and this is done by lifting the weight block 14 by hand to the position indicated in full lines in.Fig. 1 so 85 ward closing position in one direction and e dynamo electric machine being supplied with current from the battery operates as a motor and drives the internal combustion engine. Then the speed of the engine overruns that of the motor the latter is driven as a generator. Upon an increase in voltage through the oscillating motorgovernor beyond the predetermined and definite amount of force exertedby the weight block 14, as when there is a decrease in the line load the armature will be turned by the increased torque, thus turning the valve so as to decrease the volume of explosive mixture passing through the pipe 6 and at the same time lift the weight block 14 so as to release the shoulder thereof from the pivoted latch 16 permitting the latter to fall down to its normal disengaged vertical position, as indicated in dotted lines in Fig. 1, whereupon the weight is free to swing in either direction under the corresponding forces of gravity and the torque on the shaft exerted by the movement of the armature. Should a break occur in the line the circuit through the governor will be broken, and the weight will immediately carry the throttle valve down into full closing position, thus cutting oii the engine and thereby preventing it from running away.

Having thus described my invention, what I claim is 1. In an internal combustion engine a load line, a pivoted throttle valve controlling the supply of explosive mixture to the engine, a. voltage controlled magnetic-electric governor in the line and generator circuit, said governor being operable to rotate the valve in one direction tending to close the same under increased voltage through the governor, means for rotating the valve in the opposite direction, and means for holding the valve in open position.

2. In an internal combustion engine a load line, a throttle valve controlling the supply of explosive mixture to the engine, an oscillating motor governor responsive to changes in the line and including an oscillating armature and its shaft, said throttle valve being mounted on said shaft and movable from central open position in opposite directions to decrease the volume of explosive mixture passing tothe engine, a weight member of predetermined torque value opposing the a-rma-ture torque mounted onsaid shaft, and a pivoted latch adapted to hold said weight and valve in full open position, said latch being automatically releasable from the weight thereof as the armature turns the shaft.

3. In an internal combustion 'engine a throttle valve adapted to close in two directions mounted upon a shaft, an electromagnetic device connected to said shaft and adapted to move said valve in one of said two directions, an arm having a weight and stop member attached thereto connected to said shaft, said weight being adapted to move said valve in the other of said two directions, and means for engaging said stop member to hold the throttle valve in open position.

4;. In an internal combustion engine a throttle valve adapted to close in two directions mounted upon a shaft, an electromagnetic device connected to said shaft and adapted to move said valve in one of said two directions, an arm having a weight and stop member attached thereto connected to said shaft, said weight being adapted to move said valve in. the other of said two directions, and means for engaging said stop member to hold the throttle valve in open position comprising a latch pivoted to the engine adapted to engage a notch constitutin said stop member.

In witness whereof I have hereunto set my hand and seal at Indianapolis this 2nd day of November, A. D. nineteen hundred and eighteen. 

